PanListener.java 文件源码

public PanListener(Widget widget) {
    this.widget = widget;
    widget.addDomHandler(this, MouseDownEvent.getType());
    widget.addDomHandler(this, MouseUpEvent.getType());
    widget.addDomHandler(this, MouseMoveEvent.getType());
    widget.addDomHandler(this, TouchStartEvent.getType());
    widget.addDomHandler(this, TouchEndEvent.getType());
    widget.addDomHandler(this, TouchMoveEvent.getType());
}